Study of neutral grounding for 22 kV distribution system

Author

Oka, K. ; Yoshinaga, J. ; Koizumi, S. ; Uemura, S. ; Ariga, Y.

Author_Institution

Tokyo Electr. Power Co., Japan

Volume

3

fYear

2002

fDate

6-10 Oct. 2002

Firstpage

2143

Abstract

To cope with restructuring of electricity market, application of 22 kV distribution system to areas with high load density, is promising. In this paper, we have studied the neutral grounding method considering low voltage rise and induced voltage to communication line in case of ground fault. We have performed EMTP (Electromagnetic Transients Program) simulation on several distribution system models with variation of line length and assembling representing actual distribution systems. We have also compared the simulation result with measurement performed on line imitating actual 22 kV distribution line to confirm the accuracy of simulation result. Consequently, we have clarified the permissible range of neutral grounding resistance.

Keywords

EMTP; digital simulation; distribution networks; earthing; electromagnetic induction; power distribution lines; power system simulation; telecommunication transmission lines; 22 kV; EMTP simulation; EMTP/ATP; Electromagnetic Transients Program; communication line; distribution system models; electricity market restructuring; ground fault; high load density; induced voltage; line length variation; low voltage rise; neutral grounding method; Cost function; Electrical resistance measurement; Electromagnetic induction; Grounding; Insulation; Performance analysis; Performance evaluation; Power supplies; Power system transients; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exhibition 2002: Asia Pacific. IEEE/PES

Print_ISBN

0-7803-7525-4

Type

conf

DOI

10.1109/TDC.2002.1177793

Filename

1177793